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Data Line Surge Protection

Safeguard your equipment against damaging currents with surge suppressors designed to work on all types of data lines.  


Showing 1 - 15 of 32 Product results



TAA Compliance


Industrial Ethernet Surge Protector, DIN Rail


Industrial-grade protection for CAT5e and PoE connections.

CAT6 Protected Patch Cord, 10-ft. (3-m)


This CAT6-compliant cord protects against damaging surges.

ISDN Data Line Surge Protector - RJ-45, U Interface


Protects terminal adapters, NTUs, and other ISDN equipment.

In-Line Surge Protector, CSU/DSU, DDS, T1


Overcurrent and overvoltage protection!

DSL Surge Protector


Protect your DSL channel: Transform it into a Don’t Surge Line.

Power over Ethernet Surge Protector, 60-Volt


Protect your wireless Ethernet network from damaging power surges and spikes.

Surge Protector PoE, In-Line, Mode A


Protect your network from surges generated by PoE-enabled devices.

Power over Ethernet Surge Protector, 30-Volt


Protect your wireless Ethernet network from damaging power surges and spikes.

CATV Surge Protector


Stop surges before they stop your favorite equipment.

RS-232 Surge Protector - DB25, 4-Wire Serial


Protect 4-wire DB25 serial connections.

CAT5 100BASE-TX Surge Protector, Secondary (to 0.5 kV)


Protect your UTP lines.

RS-232 Surge Protector, DB25, All Wires


Protect all 25 wires on your RS-232 lines.

RS-232 Surge Protector, DB9


Protect RS-232 ports with DB9 connections.

Telco (Dialup Modem/Fax) RJ-11 Surge Protector


Guard your fax machines, phones, and dialup modems.

CCTV (BNC Coax) Surge Protector , CCTV (BNC Coax) Surge Protector


Protect your video equipment.

Black Box products can be conveniently purchased through a broad range of qualified distributors and resellers located around the globe

Black Box Explains...     
A sag is a decline in the voltage level.